"The man is thought to have constructed the backpack from a used automotive muffler, which he filled with gasoline and gunpowder...(h)e asked another person to light a wick and then began to sled down a hill. At some point during the ride, the device exploded.”

Oh, wait - now here's a shock: "Before the accident the man had been drinking."

And we used to laugh at the Road Runner cartoons because certainly no one could be as creatively dumb as friggin' Wile E. Coyote.The stupid, it burnnns, my precioussss...